2 * linux/drivers/net/irda/pxaficp_ir.c
4 * Based on sa1100_ir.c by Russell King
6 * Changes copyright (C) 2003-2005 MontaVista Software, Inc.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * Infra-red driver (SIR/FIR) for the PXA2xx embedded microprocessor
15 #include <linux/module.h>
16 #include <linux/netdevice.h>
17 #include <linux/platform_device.h>
18 #include <linux/clk.h>
20 #include <net/irda/irda.h>
21 #include <net/irda/irmod.h>
22 #include <net/irda/wrapper.h>
23 #include <net/irda/irda_device.h>
26 #include <mach/irda.h>
27 #include <mach/hardware.h>
28 #include <mach/pxa-regs.h>
29 #include <mach/regs-uart.h>
31 #define FICP __REG(0x40800000) /* Start of FICP area */
32 #define ICCR0 __REG(0x40800000) /* ICP Control Register 0 */
33 #define ICCR1 __REG(0x40800004) /* ICP Control Register 1 */
34 #define ICCR2 __REG(0x40800008) /* ICP Control Register 2 */
35 #define ICDR __REG(0x4080000c) /* ICP Data Register */
36 #define ICSR0 __REG(0x40800014) /* ICP Status Register 0 */
37 #define ICSR1 __REG(0x40800018) /* ICP Status Register 1 */
39 #define ICCR0_AME (1 << 7) /* Address match enable */
40 #define ICCR0_TIE (1 << 6) /* Transmit FIFO interrupt enable */
41 #define ICCR0_RIE (1 << 5) /* Recieve FIFO interrupt enable */
42 #define ICCR0_RXE (1 << 4) /* Receive enable */
43 #define ICCR0_TXE (1 << 3) /* Transmit enable */
44 #define ICCR0_TUS (1 << 2) /* Transmit FIFO underrun select */
45 #define ICCR0_LBM (1 << 1) /* Loopback mode */
46 #define ICCR0_ITR (1 << 0) /* IrDA transmission */
48 #define ICCR2_RXP (1 << 3) /* Receive Pin Polarity select */
49 #define ICCR2_TXP (1 << 2) /* Transmit Pin Polarity select */
50 #define ICCR2_TRIG (3 << 0) /* Receive FIFO Trigger threshold */
51 #define ICCR2_TRIG_8 (0 << 0) /* >= 8 bytes */
52 #define ICCR2_TRIG_16 (1 << 0) /* >= 16 bytes */
53 #define ICCR2_TRIG_32 (2 << 0) /* >= 32 bytes */
56 #define ICSR0_EOC (1 << 6) /* DMA End of Descriptor Chain */
58 #define ICSR0_FRE (1 << 5) /* Framing error */
59 #define ICSR0_RFS (1 << 4) /* Receive FIFO service request */
60 #define ICSR0_TFS (1 << 3) /* Transnit FIFO service request */
61 #define ICSR0_RAB (1 << 2) /* Receiver abort */
62 #define ICSR0_TUR (1 << 1) /* Trunsmit FIFO underun */
63 #define ICSR0_EIF (1 << 0) /* End/Error in FIFO */
65 #define ICSR1_ROR (1 << 6) /* Receiver FIFO underrun */
66 #define ICSR1_CRE (1 << 5) /* CRC error */
67 #define ICSR1_EOF (1 << 4) /* End of frame */
68 #define ICSR1_TNF (1 << 3) /* Transmit FIFO not full */
69 #define ICSR1_RNE (1 << 2) /* Receive FIFO not empty */
70 #define ICSR1_TBY (1 << 1) /* Tramsmiter busy flag */
71 #define ICSR1_RSY (1 << 0) /* Recevier synchronized flag */
73 #define IrSR_RXPL_NEG_IS_ZERO (1<<4)
74 #define IrSR_RXPL_POS_IS_ZERO 0x0
75 #define IrSR_TXPL_NEG_IS_ZERO (1<<3)
76 #define IrSR_TXPL_POS_IS_ZERO 0x0
77 #define IrSR_XMODE_PULSE_1_6 (1<<2)
78 #define IrSR_XMODE_PULSE_3_16 0x0
79 #define IrSR_RCVEIR_IR_MODE (1<<1)
80 #define IrSR_RCVEIR_UART_MODE 0x0
81 #define IrSR_XMITIR_IR_MODE (1<<0)
82 #define IrSR_XMITIR_UART_MODE 0x0
84 #define IrSR_IR_RECEIVE_ON (\
85 IrSR_RXPL_NEG_IS_ZERO | \
86 IrSR_TXPL_POS_IS_ZERO | \
87 IrSR_XMODE_PULSE_3_16 | \
88 IrSR_RCVEIR_IR_MODE | \
89 IrSR_XMITIR_UART_MODE)
91 #define IrSR_IR_TRANSMIT_ON (\
92 IrSR_RXPL_NEG_IS_ZERO | \
93 IrSR_TXPL_POS_IS_ZERO | \
94 IrSR_XMODE_PULSE_3_16 | \
95 IrSR_RCVEIR_UART_MODE | \
101 unsigned long last_oscr;
103 unsigned char *dma_rx_buff;
104 unsigned char *dma_tx_buff;
105 dma_addr_t dma_rx_buff_phy;
106 dma_addr_t dma_tx_buff_phy;
107 unsigned int dma_tx_buff_len;
111 struct net_device_stats stats;
112 struct irlap_cb *irlap;
119 struct pxaficp_platform_data *pdata;
125 static inline void pxa_irda_disable_clk(struct pxa_irda *si)
128 clk_disable(si->cur_clk);
132 static inline void pxa_irda_enable_firclk(struct pxa_irda *si)
134 si->cur_clk = si->fir_clk;
135 clk_enable(si->fir_clk);
138 static inline void pxa_irda_enable_sirclk(struct pxa_irda *si)
140 si->cur_clk = si->sir_clk;
141 clk_enable(si->sir_clk);
145 #define IS_FIR(si) ((si)->speed >= 4000000)
146 #define IRDA_FRAME_SIZE_LIMIT 2047
148 inline static void pxa_irda_fir_dma_rx_start(struct pxa_irda *si)
150 DCSR(si->rxdma) = DCSR_NODESC;
151 DSADR(si->rxdma) = __PREG(ICDR);
152 DTADR(si->rxdma) = si->dma_rx_buff_phy;
153 DCMD(si->rxdma) = DCMD_INCTRGADDR | DCMD_FLOWSRC | DCMD_WIDTH1 | DCMD_BURST32 | IRDA_FRAME_SIZE_LIMIT;
154 DCSR(si->rxdma) |= DCSR_RUN;
157 inline static void pxa_irda_fir_dma_tx_start(struct pxa_irda *si)
159 DCSR(si->txdma) = DCSR_NODESC;
160 DSADR(si->txdma) = si->dma_tx_buff_phy;
161 DTADR(si->txdma) = __PREG(ICDR);
162 DCMD(si->txdma) = DCMD_INCSRCADDR | DCMD_FLOWTRG | DCMD_ENDIRQEN | DCMD_WIDTH1 | DCMD_BURST32 | si->dma_tx_buff_len;
163 DCSR(si->txdma) |= DCSR_RUN;
167 * Set the IrDA communications speed.
169 static int pxa_irda_set_speed(struct pxa_irda *si, int speed)
172 unsigned int divisor;
175 case 9600: case 19200: case 38400:
176 case 57600: case 115200:
178 /* refer to PXA250/210 Developer's Manual 10-7 */
179 /* BaudRate = 14.7456 MHz / (16*Divisor) */
180 divisor = 14745600 / (16 * speed);
182 local_irq_save(flags);
186 DCSR(si->rxdma) &= ~DCSR_RUN;
189 pxa_irda_disable_clk(si);
191 /* set board transceiver to SIR mode */
192 si->pdata->transceiver_mode(si->dev, IR_SIRMODE);
194 /* enable the STUART clock */
195 pxa_irda_enable_sirclk(si);
198 /* disable STUART first */
201 /* access DLL & DLH */
203 STDLL = divisor & 0xff;
204 STDLH = divisor >> 8;
208 STISR = IrSR_IR_RECEIVE_ON | IrSR_XMODE_PULSE_1_6;
209 STIER = IER_UUE | IER_RLSE | IER_RAVIE | IER_RTIOE;
211 local_irq_restore(flags);
215 local_irq_save(flags);
220 pxa_irda_disable_clk(si);
222 /* disable FICP first */
225 /* set board transceiver to FIR mode */
226 si->pdata->transceiver_mode(si->dev, IR_FIRMODE);
228 /* enable the FICP clock */
229 pxa_irda_enable_firclk(si);
232 pxa_irda_fir_dma_rx_start(si);
233 ICCR0 = ICCR0_ITR | ICCR0_RXE;
235 local_irq_restore(flags);
245 /* SIR interrupt service routine. */
246 static irqreturn_t pxa_irda_sir_irq(int irq, void *dev_id)
248 struct net_device *dev = dev_id;
249 struct pxa_irda *si = netdev_priv(dev);
254 switch (iir & 0x0F) {
255 case 0x06: /* Receiver Line Status */
257 while (lsr & LSR_FIFOE) {
259 if (lsr & (LSR_OE | LSR_PE | LSR_FE | LSR_BI)) {
260 printk(KERN_DEBUG "pxa_ir: sir receiving error\n");
261 si->stats.rx_errors++;
263 si->stats.rx_frame_errors++;
265 si->stats.rx_fifo_errors++;
267 si->stats.rx_bytes++;
268 async_unwrap_char(dev, &si->stats, &si->rx_buff, data);
272 dev->last_rx = jiffies;
273 si->last_oscr = OSCR;
276 case 0x04: /* Received Data Available */
279 case 0x0C: /* Character Timeout Indication */
281 si->stats.rx_bytes++;
282 async_unwrap_char(dev, &si->stats, &si->rx_buff, STRBR);
283 } while (STLSR & LSR_DR);
284 dev->last_rx = jiffies;
285 si->last_oscr = OSCR;
288 case 0x02: /* Transmit FIFO Data Request */
289 while ((si->tx_buff.len) && (STLSR & LSR_TDRQ)) {
290 STTHR = *si->tx_buff.data++;
291 si->tx_buff.len -= 1;
294 if (si->tx_buff.len == 0) {
295 si->stats.tx_packets++;
296 si->stats.tx_bytes += si->tx_buff.data -
299 /* We need to ensure that the transmitter has finished. */
300 while ((STLSR & LSR_TEMT) == 0)
302 si->last_oscr = OSCR;
305 * Ok, we've finished transmitting. Now enable
306 * the receiver. Sometimes we get a receive IRQ
307 * immediately after a transmit...
310 pxa_irda_set_speed(si, si->newspeed);
313 /* enable IR Receiver, disable IR Transmitter */
314 STISR = IrSR_IR_RECEIVE_ON | IrSR_XMODE_PULSE_1_6;
315 /* enable STUART and receive interrupts */
316 STIER = IER_UUE | IER_RLSE | IER_RAVIE | IER_RTIOE;
319 netif_wake_queue(dev);
327 /* FIR Receive DMA interrupt handler */
328 static void pxa_irda_fir_dma_rx_irq(int channel, void *data)
330 int dcsr = DCSR(channel);
332 DCSR(channel) = dcsr & ~DCSR_RUN;
334 printk(KERN_DEBUG "pxa_ir: fir rx dma bus error %#x\n", dcsr);
337 /* FIR Transmit DMA interrupt handler */
338 static void pxa_irda_fir_dma_tx_irq(int channel, void *data)
340 struct net_device *dev = data;
341 struct pxa_irda *si = netdev_priv(dev);
344 dcsr = DCSR(channel);
345 DCSR(channel) = dcsr & ~DCSR_RUN;
347 if (dcsr & DCSR_ENDINTR) {
348 si->stats.tx_packets++;
349 si->stats.tx_bytes += si->dma_tx_buff_len;
351 si->stats.tx_errors++;
354 while (ICSR1 & ICSR1_TBY)
356 si->last_oscr = OSCR;
359 * HACK: It looks like the TBY bit is dropped too soon.
360 * Without this delay things break.
365 pxa_irda_set_speed(si, si->newspeed);
371 pxa_irda_fir_dma_rx_start(si);
372 while ((ICSR1 & ICSR1_RNE) && i--)
374 ICCR0 = ICCR0_ITR | ICCR0_RXE;
377 printk(KERN_ERR "pxa_ir: cannot clear Rx FIFO!\n");
379 netif_wake_queue(dev);
382 /* EIF(Error in FIFO/End in Frame) handler for FIR */
383 static void pxa_irda_fir_irq_eif(struct pxa_irda *si, struct net_device *dev, int icsr0)
385 unsigned int len, stat, data;
387 /* Get the current data position. */
388 len = DTADR(si->rxdma) - si->dma_rx_buff_phy;
391 /* Read Status, and then Data. */
396 if (stat & (ICSR1_CRE | ICSR1_ROR)) {
397 si->stats.rx_errors++;
398 if (stat & ICSR1_CRE) {
399 printk(KERN_DEBUG "pxa_ir: fir receive CRC error\n");
400 si->stats.rx_crc_errors++;
402 if (stat & ICSR1_ROR) {
403 printk(KERN_DEBUG "pxa_ir: fir receive overrun\n");
404 si->stats.rx_over_errors++;
407 si->dma_rx_buff[len++] = data;
409 /* If we hit the end of frame, there's no point in continuing. */
410 if (stat & ICSR1_EOF)
412 } while (ICSR0 & ICSR0_EIF);
414 if (stat & ICSR1_EOF) {
418 if (icsr0 & ICSR0_FRE) {
419 printk(KERN_ERR "pxa_ir: dropping erroneous frame\n");
420 si->stats.rx_dropped++;
424 skb = alloc_skb(len+1,GFP_ATOMIC);
426 printk(KERN_ERR "pxa_ir: fir out of memory for receive skb\n");
427 si->stats.rx_dropped++;
431 /* Align IP header to 20 bytes */
433 skb_copy_to_linear_data(skb, si->dma_rx_buff, len);
436 /* Feed it to IrLAP */
438 skb_reset_mac_header(skb);
439 skb->protocol = htons(ETH_P_IRDA);
442 si->stats.rx_packets++;
443 si->stats.rx_bytes += len;
445 dev->last_rx = jiffies;
449 /* FIR interrupt handler */
450 static irqreturn_t pxa_irda_fir_irq(int irq, void *dev_id)
452 struct net_device *dev = dev_id;
453 struct pxa_irda *si = netdev_priv(dev);
457 DCSR(si->rxdma) &= ~DCSR_RUN;
458 si->last_oscr = OSCR;
461 if (icsr0 & (ICSR0_FRE | ICSR0_RAB)) {
462 if (icsr0 & ICSR0_FRE) {
463 printk(KERN_DEBUG "pxa_ir: fir receive frame error\n");
464 si->stats.rx_frame_errors++;
466 printk(KERN_DEBUG "pxa_ir: fir receive abort\n");
467 si->stats.rx_errors++;
469 ICSR0 = icsr0 & (ICSR0_FRE | ICSR0_RAB);
472 if (icsr0 & ICSR0_EIF) {
473 /* An error in FIFO occured, or there is a end of frame */
474 pxa_irda_fir_irq_eif(si, dev, icsr0);
478 pxa_irda_fir_dma_rx_start(si);
479 while ((ICSR1 & ICSR1_RNE) && i--)
481 ICCR0 = ICCR0_ITR | ICCR0_RXE;
484 printk(KERN_ERR "pxa_ir: cannot clear Rx FIFO!\n");
489 /* hard_xmit interface of irda device */
490 static int pxa_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
492 struct pxa_irda *si = netdev_priv(dev);
493 int speed = irda_get_next_speed(skb);
496 * Does this packet contain a request to change the interface
497 * speed? If so, remember it until we complete the transmission
500 if (speed != si->speed && speed != -1)
501 si->newspeed = speed;
504 * If this is an empty frame, we can bypass a lot.
509 pxa_irda_set_speed(si, speed);
515 netif_stop_queue(dev);
518 si->tx_buff.data = si->tx_buff.head;
519 si->tx_buff.len = async_wrap_skb(skb, si->tx_buff.data, si->tx_buff.truesize);
521 /* Disable STUART interrupts and switch to transmit mode. */
523 STISR = IrSR_IR_TRANSMIT_ON | IrSR_XMODE_PULSE_1_6;
525 /* enable STUART and transmit interrupts */
526 STIER = IER_UUE | IER_TIE;
528 unsigned long mtt = irda_get_mtt(skb);
530 si->dma_tx_buff_len = skb->len;
531 skb_copy_from_linear_data(skb, si->dma_tx_buff, skb->len);
534 while ((unsigned)(OSCR - si->last_oscr)/4 < mtt)
537 /* stop RX DMA, disable FICP */
538 DCSR(si->rxdma) &= ~DCSR_RUN;
541 pxa_irda_fir_dma_tx_start(si);
542 ICCR0 = ICCR0_ITR | ICCR0_TXE;
546 dev->trans_start = jiffies;
550 static int pxa_irda_ioctl(struct net_device *dev, struct ifreq *ifreq, int cmd)
552 struct if_irda_req *rq = (struct if_irda_req *)ifreq;
553 struct pxa_irda *si = netdev_priv(dev);
559 if (capable(CAP_NET_ADMIN)) {
561 * We are unable to set the speed if the
562 * device is not running.
564 if (netif_running(dev)) {
565 ret = pxa_irda_set_speed(si,
568 printk(KERN_INFO "pxa_ir: SIOCSBANDWIDTH: !netif_running\n");
576 if (capable(CAP_NET_ADMIN)) {
577 irda_device_set_media_busy(dev, TRUE);
584 rq->ifr_receiving = IS_FIR(si) ? 0
585 : si->rx_buff.state != OUTSIDE_FRAME;
596 static struct net_device_stats *pxa_irda_stats(struct net_device *dev)
598 struct pxa_irda *si = netdev_priv(dev);
602 static void pxa_irda_startup(struct pxa_irda *si)
604 /* Disable STUART interrupts */
606 /* enable STUART interrupt to the processor */
608 /* configure SIR frame format: StartBit - Data 7 ... Data 0 - Stop Bit */
609 STLCR = LCR_WLS0 | LCR_WLS1;
610 /* enable FIFO, we use FIFO to improve performance */
611 STFCR = FCR_TRFIFOE | FCR_ITL_32;
615 /* configure FICP ICCR2 */
616 ICCR2 = ICCR2_TXP | ICCR2_TRIG_32;
619 DRCMR(17) = si->rxdma | DRCMR_MAPVLD;
620 DRCMR(18) = si->txdma | DRCMR_MAPVLD;
622 /* force SIR reinitialization */
624 pxa_irda_set_speed(si, 9600);
626 printk(KERN_DEBUG "pxa_ir: irda startup\n");
629 static void pxa_irda_shutdown(struct pxa_irda *si)
633 local_irq_save(flags);
635 /* disable STUART and interrupt */
637 /* disable STUART SIR mode */
641 DCSR(si->txdma) &= ~DCSR_RUN;
642 DCSR(si->rxdma) &= ~DCSR_RUN;
646 /* disable the STUART or FICP clocks */
647 pxa_irda_disable_clk(si);
652 local_irq_restore(flags);
654 /* power off board transceiver */
655 si->pdata->transceiver_mode(si->dev, IR_OFF);
657 printk(KERN_DEBUG "pxa_ir: irda shutdown\n");
660 static int pxa_irda_start(struct net_device *dev)
662 struct pxa_irda *si = netdev_priv(dev);
667 err = request_irq(IRQ_STUART, pxa_irda_sir_irq, 0, dev->name, dev);
671 err = request_irq(IRQ_ICP, pxa_irda_fir_irq, 0, dev->name, dev);
676 * The interrupt must remain disabled for now.
678 disable_irq(IRQ_STUART);
679 disable_irq(IRQ_ICP);
682 si->rxdma = pxa_request_dma("FICP_RX",DMA_PRIO_LOW, pxa_irda_fir_dma_rx_irq, dev);
686 si->txdma = pxa_request_dma("FICP_TX",DMA_PRIO_LOW, pxa_irda_fir_dma_tx_irq, dev);
691 si->dma_rx_buff = dma_alloc_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT,
692 &si->dma_rx_buff_phy, GFP_KERNEL );
693 if (!si->dma_rx_buff)
694 goto err_dma_rx_buff;
696 si->dma_tx_buff = dma_alloc_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT,
697 &si->dma_tx_buff_phy, GFP_KERNEL );
698 if (!si->dma_tx_buff)
699 goto err_dma_tx_buff;
701 /* Setup the serial port for the initial speed. */
702 pxa_irda_startup(si);
705 * Open a new IrLAP layer instance.
707 si->irlap = irlap_open(dev, &si->qos, "pxa");
713 * Now enable the interrupt and start the queue
715 enable_irq(IRQ_STUART);
717 netif_start_queue(dev);
719 printk(KERN_DEBUG "pxa_ir: irda driver opened\n");
724 pxa_irda_shutdown(si);
725 dma_free_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT, si->dma_tx_buff, si->dma_tx_buff_phy);
727 dma_free_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT, si->dma_rx_buff, si->dma_rx_buff_phy);
729 pxa_free_dma(si->txdma);
731 pxa_free_dma(si->rxdma);
733 free_irq(IRQ_ICP, dev);
735 free_irq(IRQ_STUART, dev);
741 static int pxa_irda_stop(struct net_device *dev)
743 struct pxa_irda *si = netdev_priv(dev);
745 netif_stop_queue(dev);
747 pxa_irda_shutdown(si);
751 irlap_close(si->irlap);
755 free_irq(IRQ_STUART, dev);
756 free_irq(IRQ_ICP, dev);
758 pxa_free_dma(si->rxdma);
759 pxa_free_dma(si->txdma);
762 dma_free_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT, si->dma_tx_buff, si->dma_tx_buff_phy);
764 dma_free_coherent(si->dev, IRDA_FRAME_SIZE_LIMIT, si->dma_rx_buff, si->dma_rx_buff_phy);
766 printk(KERN_DEBUG "pxa_ir: irda driver closed\n");
770 static int pxa_irda_suspend(struct platform_device *_dev, pm_message_t state)
772 struct net_device *dev = platform_get_drvdata(_dev);
775 if (dev && netif_running(dev)) {
776 si = netdev_priv(dev);
777 netif_device_detach(dev);
778 pxa_irda_shutdown(si);
784 static int pxa_irda_resume(struct platform_device *_dev)
786 struct net_device *dev = platform_get_drvdata(_dev);
789 if (dev && netif_running(dev)) {
790 si = netdev_priv(dev);
791 pxa_irda_startup(si);
792 netif_device_attach(dev);
793 netif_wake_queue(dev);
800 static int pxa_irda_init_iobuf(iobuff_t *io, int size)
802 io->head = kmalloc(size, GFP_KERNEL | GFP_DMA);
803 if (io->head != NULL) {
805 io->in_frame = FALSE;
806 io->state = OUTSIDE_FRAME;
809 return io->head ? 0 : -ENOMEM;
812 static int pxa_irda_probe(struct platform_device *pdev)
814 struct net_device *dev;
816 unsigned int baudrate_mask;
819 if (!pdev->dev.platform_data)
822 err = request_mem_region(__PREG(STUART), 0x24, "IrDA") ? 0 : -EBUSY;
826 err = request_mem_region(__PREG(FICP), 0x1c, "IrDA") ? 0 : -EBUSY;
830 dev = alloc_irdadev(sizeof(struct pxa_irda));
834 si = netdev_priv(dev);
835 si->dev = &pdev->dev;
836 si->pdata = pdev->dev.platform_data;
838 si->sir_clk = clk_get(&pdev->dev, "UARTCLK");
839 si->fir_clk = clk_get(&pdev->dev, "FICPCLK");
840 if (IS_ERR(si->sir_clk) || IS_ERR(si->fir_clk)) {
841 err = PTR_ERR(IS_ERR(si->sir_clk) ? si->sir_clk : si->fir_clk);
846 * Initialise the SIR buffers
848 err = pxa_irda_init_iobuf(&si->rx_buff, 14384);
851 err = pxa_irda_init_iobuf(&si->tx_buff, 4000);
855 if (si->pdata->startup)
856 err = si->pdata->startup(si->dev);
860 dev->hard_start_xmit = pxa_irda_hard_xmit;
861 dev->open = pxa_irda_start;
862 dev->stop = pxa_irda_stop;
863 dev->do_ioctl = pxa_irda_ioctl;
864 dev->get_stats = pxa_irda_stats;
866 irda_init_max_qos_capabilies(&si->qos);
869 if (si->pdata->transceiver_cap & IR_SIRMODE)
870 baudrate_mask |= IR_9600|IR_19200|IR_38400|IR_57600|IR_115200;
871 if (si->pdata->transceiver_cap & IR_FIRMODE)
872 baudrate_mask |= IR_4000000 << 8;
874 si->qos.baud_rate.bits &= baudrate_mask;
875 si->qos.min_turn_time.bits = 7; /* 1ms or more */
877 irda_qos_bits_to_value(&si->qos);
879 err = register_netdev(dev);
882 dev_set_drvdata(&pdev->dev, dev);
885 if (si->pdata->shutdown)
886 si->pdata->shutdown(si->dev);
888 kfree(si->tx_buff.head);
890 kfree(si->rx_buff.head);
892 if (si->sir_clk && !IS_ERR(si->sir_clk))
893 clk_put(si->sir_clk);
894 if (si->fir_clk && !IS_ERR(si->fir_clk))
895 clk_put(si->fir_clk);
898 release_mem_region(__PREG(FICP), 0x1c);
900 release_mem_region(__PREG(STUART), 0x24);
906 static int pxa_irda_remove(struct platform_device *_dev)
908 struct net_device *dev = platform_get_drvdata(_dev);
911 struct pxa_irda *si = netdev_priv(dev);
912 unregister_netdev(dev);
913 if (si->pdata->shutdown)
914 si->pdata->shutdown(si->dev);
915 kfree(si->tx_buff.head);
916 kfree(si->rx_buff.head);
917 clk_put(si->fir_clk);
918 clk_put(si->sir_clk);
922 release_mem_region(__PREG(STUART), 0x24);
923 release_mem_region(__PREG(FICP), 0x1c);
928 static struct platform_driver pxa_ir_driver = {
931 .owner = THIS_MODULE,
933 .probe = pxa_irda_probe,
934 .remove = pxa_irda_remove,
935 .suspend = pxa_irda_suspend,
936 .resume = pxa_irda_resume,
939 static int __init pxa_irda_init(void)
941 return platform_driver_register(&pxa_ir_driver);
944 static void __exit pxa_irda_exit(void)
946 platform_driver_unregister(&pxa_ir_driver);
949 module_init(pxa_irda_init);
950 module_exit(pxa_irda_exit);
952 MODULE_LICENSE("GPL");
953 MODULE_ALIAS("platform:pxa2xx-ir");